PDF malware analysis — malicious · 3e97b85fc05f4d9c

MALICIOUS

PDF

147.5 KB Created: 2010-03-08 16:47:58 +08:00

MD5: e5ca1d4c493b209cf12a34baa0ce983e SHA-1: 2ba16a88ae0fc5eb56ce88d7527422d8047ef90a SHA-256: 3e97b85fc05f4d9c40ab2045dc5a318051b6e798999bf8f5b2935a78892eb6ab

194 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The sample is a PDF document that leverages XFA (XML Forms Architecture) to perform a heap spray attack. This is indicated by the critical heuristic firings for 'PDF_XFA_HEAP_SPRAY' and 'CVE_2010_0188'. The XFA JavaScript heap-spray exploit code is present and targets the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF processing. The document also contains embedded JavaScript streams and embedded files, suggesting a multi-stage attack. The presence of an image lure heuristic further supports a phishing or social engineering vector.

Heuristics 10

Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188

PDF contains XFA image data with an inline crafted TIFF payload and shellcode/delivery markers. This is the data-bound variant of the CVE-2010-0188 Adobe Reader LibTIFF/XFA exploit shape.
XFA JavaScript heap-spray exploit code critical PDF_XFA_HEAP_SPRAY

PDF contains XFA script content with heap-spray or shellcode-like JavaScript markers such as large encoded word sequences, util.pack, large arrays, or spray variable names. This is a weaponised Adobe Reader exploit pattern, not a normal interactive form.
Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE

PDF has 2 image(s), only 1 text block(s), carries a click-outward action, and is only 147 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic (matched inside decoded stream)
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://ns.adobe.com/xap/1.0/
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/pdf/1.3/

Extracted artifacts 11

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0002.bin` `c06dcd026a7ea0536b63e07ce688691b585339a3ab7ff59065e546b56308c7bb`	pdf-embedded-file	PDF EmbeddedFile object 2 at offset 0x1504	85 bytes
`embedded_file_obj0006.bin` `226eeacc5eecef2a05ca480f144ff6936594e20b5c7672e8f29f25c8bea65a56`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0x2593	2928 bytes
`embedded_file_obj0007.bin` `4cb349134bdb5f1a1c03281df9b53128ebe947f235398a912a4f0a9f638b24d5`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0x28FF	200 bytes
`embedded_file_obj0008.bin` `d51b9fc28b592405fb598e711d1495e1421571073bc2e8542d55389768716c06`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x29F1	835 bytes
`embedded_file_obj0009.bin` `e65f1e07bc965092b3153e64a1e8777a909cc47a98c0e2a10d38c47def2e6652`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x2BC9	291 bytes
`stream_002_off000003c9.js` `f574e4d51594d1a8fd22e125b109b827c437aa898edc78babb62dbb93f8744f8`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3C9	1532 bytes
`stream_003_off000005b3.js` `4a1aca004cf20431c9a66dce85404a6411a54d881a6c257882260ffc972a13eb`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5B3	870 bytes
`stream_012_off000015a1.bin` `feb00b1700e632495d1d5b008f99d161a74a24724f2ef8c687930351e0db2aa5`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x15A1	1431 bytes
`stream_013_off0000183f.js` `964b35fd2cf89dd55c1ec763fabaa19e720fcce510e60402ad1e45eecd2754e0`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x183F	9163 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).
`stream_014_off000023ce.bin` `5a53ad6000bf93ffaf08568dac26565e328390d583d17501efbfb1fd2c3ee15d`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x23CE	11731 bytes
`objstm_0057_00.bin` `4dd388119e0638cb31f62fa2a8ca84b64569e773a95dc748d92842629bc88436`	pdf-objstm-decoded	PDF /ObjStm 57 0 obj (inflated)	2437 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.